How To Tell If A Capacitor Is Bad On A Motherboard

- September 28, 2018

In this image i have tried to photograph the slight bulge on the top of this bad capacitor. You would need a solid understanding of electrical components such as capacitors for instance.

Motherboard Failure Diagnosis And Solutions

How Capacitors On Motherboards And Other Components Work

Bad Mosfet On This Motherboard Page 1

Testing bad motherboard capacitors waybacktech.

How to tell if a capacitor is bad on a motherboard. Most capacitors expel the electrolytic fluid inside them. When looking for bad capacitors on a motherboard it helps to know what a healthy one looks like first. Spotting a bad capacitor is easy.

Then you may see this brown crust around the capacitor or perhaps on it. Sometimes really bad caps can leak their electrolyte out of themselves too. In fact if you rub your finger over it you can feel the indentation a bad capacitor or one that is starting to bulge will start to swell at the top.

Replace the motherboard ebay is a great place to find a refurbished motherboard. Its the one with the bulging top and leaking electrolytic goo. It often looks somewhat like a dried coffee stain.

If we read a very high resistance across the capacitor several mw this is a sign that the capacitor likely is defective as well. If you know your motherboard is dead as an alternate route you could try and repair your motherboard but its no easy task. It either dries up on the outer part of the top of the capacitor or leaks on to the circuit board.

Repair the motherboard you can replace the bad capacitor yourself see link below or have a trained professional do it for you. Or maybe two or three. Replace the computer if youve been looking for an excuse to get a new computer you just found one.

If we read a very low resistance near 0w across the capacitor we know the capacitor is defective. Worst case scenario the capacitor explodes due to too much electrical stress. It is reading as if there is a short circuit across it.

A good capacitor usually looks indented when viewing it from the top. Well bad caps typically have a domed or swollen top. Simple capacitance value checking uf microfarad for those who dont know of some blown capacitors.